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Das, A., Latouche, C., Jobic, S., Gautron, E., Merabet, A., Zając, M., Shibui, A., Krüger, P., Huang, W.-H., Chen, C.-L., Kandasami, A. & Bittencourt, C. (2024) Stabilization of high-pressure phase of CdO by nanoparticle formation in CdxZn1-xO thin films. Acta Materialia, 267 119744. 
Added by: Richard Baschera (2024-04-16 08:16:26)   Last edited by: Richard Baschera (2024-04-16 08:19:35)
Type de référence: Article
DOI: 10.1016/j.actamat.2024.119744
Numéro d'identification (ISBN etc.): 1359-6454
Clé BibTeX: Das2024
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Catégories: IMN, INTERNATIONAL, MIOPS
Mots-clés: Phase transformation, X-ray absorption spectroscopy, X-ray photoelectron spectroscopy
Créateurs: Bittencourt, Chen, Das, Gautron, Huang, Jobic, Kandasami, Krüger, Latouche, Merabet, Shibui, Zając
Collection: Acta Materialia
Consultations : 1/3
Indice de consultation : 1%
Indice de popularité : 0.25%
Liens URLs     https://www.scienc ... /S1359645424000971
Résumé     
We report the observation of the high-pressure B2 phase in CdO nanoparticles obtained by temperature induced phase transition from the CdO B1 phase in CdxZn1-xO films grown on a Si substrate. The structural transformation occurs upon annealing the film from 700 to 900 °C and is monitored by X-ray diffraction and Raman spectroscopy. Concomitantly, willemite Zn2SiO4 nanoparticles form at the CdxZn1-xO/Si interface and are evidenced using scanning transmission electron microscopy, X-ray absorption and photoelectron spectroscopies. The presence of Zn2SiO4 at the film-substrate interface is assumed to exert locally a high pressure on the CdO crystallites. The B1 to B2 phase transition in CdO was previously only reported under hydrostatic pressure conditions. By varying the Cd content and adjusting the growth conditions, we have succeeded in stabilizing the metastable B2 phase under ambient conditions, which holds significant potential for applications in energy storage and stress sensing.
  
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